As of April 25, 2026, the three largest insider holders of ENTG are Bertrand Loy (Executive Chair, 227.53K shares), Todd James Edlund (Evp Coo, 175.40K shares), Todd James Edlund (Evp Coo, 175.40K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Bertrand Loy | Executive Chair | 227,527 | 0 | 20 Apr, 2026 |
| Todd James Edlund | Evp Coo | 175,399 | 0 | 01 Apr, 2022 |
| Todd James Edlund | Evp Coo | 175,399 | 0 | 01 Apr, 2022 |
| Todd James Edlund | Evp Coo | 175,399 | 0 | 01 Apr, 2022 |
| Todd James Edlund | Evp Coo | 175,399 | 0 | 01 Apr, 2022 |
| David Reeder | President Ceo | 97,207 | 0 | 02 Apr, 2026 |
| David Reeder | President Ceo | 97,207 | 0 | 02 Apr, 2026 |
| David Reeder | President Ceo | 97,207 | 0 | 02 Apr, 2026 |
| David Reeder | President Ceo | 97,207 | 0 | 02 Apr, 2026 |
| Stuart Tison | Svp President, Scem | 85,372 | 0 | 21 Feb, 2023 |
| Stuart Tison | Svp President, Scem | 85,372 | 0 | 21 Feb, 2023 |
| Stuart Tison | Svp President, Scem | 85,372 | 0 | 21 Feb, 2023 |
| Stuart Tison | Svp President, Scem | 85,372 | 0 | 21 Feb, 2023 |
| Susan G. Rice | Svp, Global Human Resources | 75,971 | 0 | 06 Apr, 2026 |
| Clinton M. Haris | Svp President, Aps Division | 56,251 | 0 | 02 Apr, 2026 |
| Clinton M. Haris | Svp President, Aps Division | 54,961 | 0 | 06 Apr, 2026 |
| Clinton M. Haris | Svp President, Aps Division | 54,961 | 0 | 06 Apr, 2026 |
| Clinton M. Haris | Svp President, Aps Division | 54,961 | 0 | 06 Apr, 2026 |
| Daniel D. Woodland | Svp President, Ms Division | 53,605 | 0 | 06 Apr, 2026 |
| Michael A Bradley | - | 53,488 | 0 | 29 Apr, 2022 |
| Joseph Colella | Svp And General Counsel | 50,121 | 0 | 08 Apr, 2026 |
| Olivier Blachier | Svp, Chief Strategy Officer | 34,897 | 0 | 08 Apr, 2026 |
| Linda Lagorga | Svp, Chief Financial Officer | 33,810 | 0 | 23 Feb, 2026 |
| Linda Lagorga | Svp, Chief Financial Officer | 33,810 | 0 | 23 Feb, 2026 |
| Linda Lagorga | Svp, Chief Financial Officer | 33,810 | 0 | 23 Feb, 2026 |
| Linda Lagorga | Svp, Chief Financial Officer | 33,810 | 0 | 23 Feb, 2026 |
| Bruce W. Beckman | Svp, Finance | 28,821 | 0 | 21 Feb, 2023 |
| Neil Richards | Svp, Goscq | 27,849 | 0 | 08 Apr, 2025 |
| Neil Richards | Svp, Goscq | 27,849 | 0 | 08 Apr, 2025 |
| Neil Richards | Svp, Goscq | 27,849 | 0 | 08 Apr, 2025 |
| Neil Richards | Svp, Goscq | 27,849 | 0 | 08 Apr, 2025 |
| William James Shaner | Svp President, Amh | 25,676 | 0 | 03 Apr, 2024 |
| William James Shaner | Svp President, Amh | 25,676 | 0 | 03 Apr, 2024 |
| William James Shaner | Svp President, Amh | 25,676 | 0 | 03 Apr, 2024 |
| William James Shaner | Svp President, Amh | 25,676 | 0 | 03 Apr, 2024 |
| Azita Saleki-Gerhardt | - | 24,971 | 0 | 25 Apr, 2025 |
| Azita Saleki-Gerhardt | - | 24,971 | 0 | 25 Apr, 2025 |
| Azita Saleki-Gerhardt | - | 24,971 | 0 | 25 Apr, 2025 |
| Azita Saleki-Gerhardt | - | 24,971 | 0 | 25 Apr, 2025 |
| James P Lederer | - | 20,434 | 0 | 11 Dec, 2025 |
| James P Lederer | - | 20,434 | 0 | 11 Dec, 2025 |
| James Gentilcore | - | 18,507 | 0 | 25 Apr, 2025 |
| James Gentilcore | - | 18,507 | 0 | 25 Apr, 2025 |
| James Gentilcore | - | 18,507 | 0 | 25 Apr, 2025 |
| Michael Besnard | Svp, Chief Commercial Officer | 17,936 | 0 | 08 Apr, 2025 |
| Paul L H Olson | - | 17,199 | 0 | 29 Apr, 2022 |
| Paul L H Olson | - | 17,199 | 0 | 29 Apr, 2022 |
| Paul L H Olson | - | 17,199 | 0 | 29 Apr, 2022 |
| Paul L H Olson | - | 17,199 | 0 | 29 Apr, 2022 |
| James Anthony O'Neill | Svp Cto | 15,704 | 0 | 08 Apr, 2025 |
| James Anthony O'Neill | Svp Cto | 15,704 | 0 | 08 Apr, 2025 |
| James Anthony O'Neill | Svp Cto | 15,704 | 0 | 08 Apr, 2025 |
| James Anthony O'Neill | Svp Cto | 15,704 | 0 | 08 Apr, 2025 |
| Yvette Kanouff | - | 11,121 | 0 | 25 Apr, 2025 |
| Yvette Kanouff | - | 11,121 | 0 | 25 Apr, 2025 |
| Michael Sauer | Vp, Controller Cao | 10,001 | 0 | 06 Apr, 2026 |
| Corey Rucci | Svp, Business Development | 8,540 | 0 | 31 Mar, 2022 |
| Corey Rucci | Svp, Business Development | 8,540 | 0 | 31 Mar, 2022 |
| Corey Rucci | Svp, Business Development | 8,540 | 0 | 31 Mar, 2022 |
| Corey Rucci | Svp, Business Development | 8,540 | 0 | 31 Mar, 2022 |
| Rodney Clark | - | 7,500 | 0 | 13 Jun, 2025 |
| Olivier Blachier | Svp Business New Markets Dev. | 5,680 | 0 | 02 Nov, 2021 |
| James Robert Anderson | - | 4,877 | 0 | 25 Apr, 2024 |
| Inc Entegris | - | 4,104 | 0 | 25 Apr, 2025 |
| James Gentilcore | - | 0 | 4,090 | 19 Oct, 2021 |
| James Gentilcore | - | 0 | 4,090 | 19 Oct, 2021 |
| James Gentilcore | - | 0 | 4,090 | 19 Oct, 2021 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 17 Apr, 2026 | Bertrand Loy | Common Stock | A | 44,138 | $98.11 | 271,665 | D | M |
| 17 Apr, 2026 | Bertrand Loy | Common Stock | D | 44,138 | $144.41 | 227,527 | D | S |
| 17 Apr, 2026 | Bertrand Loy | Employee Stock Option (Right to Buy) | D | 44,138 | $0.00 | 0 | D | M |
| 14 Apr, 2026 | Bertrand Loy | Common Stock | A | 17,396 | $98.11 | 244,923 | D | M |
| 14 Apr, 2026 | Bertrand Loy | Common Stock | D | 17,396 | $140.22 | 227,527 | D | S |
| 14 Apr, 2026 | Bertrand Loy | Employee Stock Option (Right to Buy) | D | 17,396 | $0.00 | 44,138 | D | M |
| 07 Apr, 2026 | Joseph Colella | Common Stock | D | 1,592 | $115.57 | 50,121 | D | S |
| 07 Apr, 2026 | Olivier Blachier | Common Stock | D | 275 | $115.57 | 34,897 | D | S |
| 05 Apr, 2026 | Joseph Colella | Common Stock | D | 1,493 | $116.40 | 51,713 | D | F |
| 05 Apr, 2026 | Clinton M. Haris | Common Stock | D | 1,290 | $116.40 | 54,961 | D | F |
| 05 Apr, 2026 | Olivier Blachier | Common Stock | D | 643 | $116.40 | 35,172 | D | F |
| 05 Apr, 2026 | Clinton M. Haris | Common Stock | D | 1,290 | $116.40 | 54,961 | D | F |
| 05 Apr, 2026 | Clinton M. Haris | Common Stock | D | 1,290 | $116.40 | 54,961 | D | F |
| 05 Apr, 2026 | Bertrand Loy | Common Stock | D | 9,868 | $116.40 | 227,527 | D | F |
| 05 Apr, 2026 | Susan G. Rice | Common Stock | D | 1,422 | $116.40 | 75,971 | D | F |
| 05 Apr, 2026 | Michael Sauer | Common Stock | D | 316 | $116.40 | 10,001 | D | F |
| 05 Apr, 2026 | Daniel D. Woodland | Common Stock | D | 1,228 | $116.40 | 53,605 | D | F |
| 01 Apr, 2026 | Clinton M. Haris | Common Stock | A | 6,318 | $0.00 | 56,251 | D | A |
| 01 Apr, 2026 | Clinton M. Haris | Common Stock | A | 6,318 | $0.00 | 56,251 | D | A |
| 01 Apr, 2026 | David Reeder | Common Stock | A | 38,750 | $0.00 | 97,207 | D | A |